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根据句意和汉语注释,在相应的横线上,写出单词的正确形式。

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/10/01 22:01:06
根据句意和汉语注释,在相应的横线上,写出单词的正确形式。
小题1:It is not polite to laugh at others’ ________ (缺点), boys and girls.
小题2:It is ________ (确信的) that the government will take action to prevent the environment getting worse.
小题3:Last spring, the viruses ________ (扩散) all of the town in a very short time.
小题4:The scientists are devoting themselves to ________ (开发) plants that can grow on Mars.


小题1:disadvantages 

小题2:certain

小题3:spread

小题4:developing